gimple.c (canonicalize_cond_expr_cond): Strip conversions around truth-valued expressions.

2009-11-19  Richard Guenther  <rguenther@suse.de>

	* gimple.c (canonicalize_cond_expr_cond): Strip conversions
	around truth-valued expressions.
	* tree.c (free_lang_data): Untangle check for LTO frontend.

From-SVN: r154332

gcc/ChangeLog

+2009-11-19  Richard Guenther  <rguenther@suse.de>
+
+	* gimple.c (canonicalize_cond_expr_cond): Strip conversions
+	around truth-valued expressions.
+	* tree.c (free_lang_data): Untangle check for LTO frontend.
+
 2009-11-19  Jakub Jelinek  <jakub@redhat.com>
 
 	* tree.c (need_assembler_name_p): Use cgraph_get_node instead

gcc/gimple.c

@@ -2937,9 +2937,14 @@ recalculate_side_effects (tree t)
 tree
 canonicalize_cond_expr_cond (tree t)
 {
+  /* Strip conversions around boolean operations.  */
+  if (CONVERT_EXPR_P (t)
+      && truth_value_p (TREE_CODE (TREE_OPERAND (t, 0))))
+    t = TREE_OPERAND (t, 0);
+
   /* For (bool)x use x != 0.  */
-  if (TREE_CODE (t) == NOP_EXPR
-      && TREE_TYPE (t) == boolean_type_node)
+  if (CONVERT_EXPR_P (t)
+      && TREE_CODE (TREE_TYPE (t)) == BOOLEAN_TYPE)
     {
       tree top0 = TREE_OPERAND (t, 0);
       t = build2 (NE_EXPR, TREE_TYPE (t),

gcc/tree.c

@@ -4921,6 +4921,10 @@ free_lang_data (void)
 {
   unsigned i;
 
+  /* If we are the LTO frontend we have freed lang-specific data already.  */
+  if (in_lto_p)
+    return 0;
+
   /* Allocate and assign alias sets to the standard integer types
      while the slots are still in the way the frontends generated them.  */
   for (i = 0; i < itk_none; ++i)
@@ -4929,8 +4933,7 @@ free_lang_data (void)
 
   /* FIXME.  Remove after save_debug_info is working.  */
   if (!(flag_generate_lto
-	|| (!in_lto_p
-	    && !flag_gtoggle && debug_info_level <= DINFO_LEVEL_TERSE)))
+	|| (!flag_gtoggle && debug_info_level <= DINFO_LEVEL_TERSE)))
     return 0;
 
   /* Traverse the IL resetting language specific information for